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Cyclosporiasis cases in US climb to 15,716, CDC says

By Thomson Reuters Aug 18, 2026 | 6:07 PM

Aug 18 (Reuters) – The Centers for Disease Control and Prevention on Tuesday reported 15,716 confirmed cases of cyclosporiasis in the United ​States, an increase of 1,821 cases ‌from a week ago.

Here are more details:

• The CDC said it has received reports of 15,716 confirmed cases of cyclosporiasis across 47 states, with 828 hospitalizations and ‌two ​deaths as of August 17. ⁠At least 11,841 additional ⁠cases of cyclosporiasis may require further investigation and analysis, CDC said.

• The data include the cases reported in the ongoing multistate outbreak ​linked to recalled iceberg lettuce, CDC said, adding that it is investigating multiple clusters ⁠of cyclosporiasis.

• CDC and FDA are ⁠investigating at least six other clusters ​for which sources have not yet been confirmed, ​CDC said.

• Michigan, the hardest-hit state in the ‌17-state outbreak of cyclosporiasis, reported 13,909 cases linked to the parasitic disease last week, up roughly 11% from the week before, but state ⁠officials said the rise largely reflected a processing backlog and the worst may be over.

• The cyclosporiasis ⁠outbreak is ‌one of the largest foodborne illness ⁠events in recent U.S. history. The ​illness ‌is caused by the cyclospora parasite, ​which can ⁠lead to diarrhea, nausea and other gastrointestinal symptoms.

• The outbreak has shaken U.S. consumers nationwide, causing many to forgo eating fresh produce or dining in restaurants.

(Reporting by Sneha S K; Editing by ​Shinjini Ganguli)